Gas-heated welding-tool.



un Wows a 8 A. PUTTERMAN. I GAS HEATED WELDING TQOL. IAPPLIGATION FILED APR. 29, 1908.

Patented Sept. 15, 190a;

"Q (J wfor w a a ,afiwmz/ I any Home 1 Invented certain new and useful ments in said coil being provided with a welding tool, and

AARON FUTTERMAN, OF NEW YORK, N. Y.

GAS-H EATED WELDING-TOOL.

Specification of Letters Patent.

Patented Sept. 15, 1908.

Application filed April 29, 1908. Serial N 0. 429,859.

To whom it may concern:

Bronx, county and State Improve- Gas j-Heated Welding-Tools, of which the following is a specificationr invention relates to an improved tool for welding iron and other metals by a mixture of illuminating gas and oxygen flame so that a great many Wel g operations can be performed; and for'this purpose the invention consists 'of a Welding tool comprising a mixing chamber, m ans for supplying illunnnating gas and oxygen to said IIllXillg.

chamber, a stopcock for regulating the supply of illuminating gas to the mixing chambar, a second mixing chamber, and a coil connected with the auxiliary mixing chamber, nozzle at the end, as will be fully described hereinafter and finally pointed out in the claim.

In the accompanying drawings, Figure l representsa side-elevation of m.

Fig. 2 is a vertical longitudinal section of the same.

Similar letters of reference indicate corresponding parts.

ng chamber of my n11 tool in which a mixture of and oxygen is used. The mixing chamber is ed in the usual manner with asbestos ers, and provided at one end' with a nipple a? to which a hose a for the oxygen is ap plied, and with a short lateral stud-pipe (1 having a stop-cock a and connected with a supply-pipe'a to which. the hose a for the illuminating gas is applied. f Axially in line uminating gas with the mixing chamber is arranged a pipe b, which-is screwed a short ni ber c is connected which is. applied a at right angles totheaxis of the chamber 0 and coil (1.

Referring to the drawings, a represents the claim as new and desire to. roved welding I a coil-pipe d to the end of l nozzlen, which is located l The coil (1 is heat; 1. by convection from .the nozzle 12 and serves to heat up the mixture of illuminating gas and oxygen in. itspassage through the coil, so that the mixture of gas is burned at a higher temperature than when burned in non-heated state. The coil serves therefore as a heater for the addition to mixing the gases intimately during their passage through the convolutions of the coil. The coil preferably diminishes in diameter from the end adjacent to the auxiliary mixing chamber 0, towards the opposite end to which the nozzle is applied. a

' The improved Welding tool is adapted for metals which do not require an extra high temperature for welding, and has the advantage that it can be operated with ordinary illuminating which can be bought in tl e welding tool A welding tool comprising a mixing chamber provided with means for receiving illuminating gas andoxygen, an auxiliary smaller mixing chamber, a tube connecting the two mixing chambers, and a heating coil connected with the smaller mixing chamber and having a nozzle to which all the gaseous mixture received in said smaller mixing chamber is carried by said coil.

In'testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

AARON FUTTERMAN.

gas in connection with a fountam containing oxygen under pressure, 

